CVE-2025-38313

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix double-free on mc_dev The blamed commit tried to simplify how the deallocations are done but, in the process, introduced a double-free on the mc_dev variable. In case the MC device is a DPRC, a new mc_bus is allocated and the mc_dev variable is just a reference to one of its fields. In this circumstance, on the error path only the mc_bus should be freed. This commit introduces back the following checkpatch warning which is a false-positive. WARNING: kfree(NULL) is safe and this check is probably not required + if (mc_bus) + kfree(mc_bus);
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

19 Dec 2025, 16:44

Type Values Removed Values Added
First Time Linux
Debian
Debian debian Linux
Linux linux Kernel
CWE CWE-415
References () https://git.kernel.org/stable/c/12e4431e5078847791936820bd39df9e1ee26d2e - () https://git.kernel.org/stable/c/12e4431e5078847791936820bd39df9e1ee26d2e - Patch
References () https://git.kernel.org/stable/c/1d5baab39e5b09a76870b345cdee7933871b881f - () https://git.kernel.org/stable/c/1d5baab39e5b09a76870b345cdee7933871b881f - Patch
References () https://git.kernel.org/stable/c/3135e03a92f6b5259d0a7f25f728e9e7866ede3f - () https://git.kernel.org/stable/c/3135e03a92f6b5259d0a7f25f728e9e7866ede3f - Patch
References () https://git.kernel.org/stable/c/4b23c46eb2d88924b93aca647bde9a4b9cf62cf9 - () https://git.kernel.org/stable/c/4b23c46eb2d88924b93aca647bde9a4b9cf62cf9 - Patch
References () https://git.kernel.org/stable/c/7002b954c4a8b9965ba0f139812ee4a6f71beac8 - () https://git.kernel.org/stable/c/7002b954c4a8b9965ba0f139812ee4a6f71beac8 - Patch
References () https://git.kernel.org/stable/c/873d47114fd5e5a1cad2018843671537cc71ac84 - () https://git.kernel.org/stable/c/873d47114fd5e5a1cad2018843671537cc71ac84 - Patch
References () https://git.kernel.org/stable/c/b2057374f326303c86d8423415ab58656eebc695 - () https://git.kernel.org/stable/c/b2057374f326303c86d8423415ab58656eebc695 - Patch
References () https://git.kernel.org/stable/c/d694bf8a9acdbd061596f3e7549bc8cb70750a60 - () https://git.kernel.org/stable/c/d694bf8a9acdbd061596f3e7549bc8cb70750a60 - Patch
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory
CPE cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 7.8

03 Nov 2025, 18:16

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html -
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html -

10 Jul 2025, 13:17

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bus: fsl-mc: corrección de doble liberación en mc_dev La confirmación criticada intentó simplificar cómo se realizan las desasignaciones pero, en el proceso, introdujo una doble liberación en la variable mc_dev. En caso de que el dispositivo MC sea un DPRC, se asigna un nuevo mc_bus y la variable mc_dev es solo una referencia a uno de sus campos. En esta circunstancia, en la ruta de error solo se debe liberar mc_bus. Esta confirmación introduce de nuevo la siguiente advertencia checkpatch que es un falso positivo. ADVERTENCIA: kfree(NULL) es seguro y esta comprobación probablemente no sea necesaria + if (mc_bus) + kfree(mc_bus);

10 Jul 2025, 08:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-07-10 08:15

Updated : 2025-12-19 16:44


NVD link : CVE-2025-38313

Mitre link : CVE-2025-38313

CVE.ORG link : CVE-2025-38313


JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel
CWE
CWE-415

Double Free